|關於more background information about the T-51b and its appearances in other games，參見T-51b power armor。|
關於an overview of various models of power armor in the Fallout series of games，參見Power armor。
T-51b powered Infantry armor or power armor represented the peak of armored infantry technology before the Great War. Now, only the most technologically advanced factions with ties to the pre-War American military or federal government, such as the Brotherhood of Steel or the Enclave, have access to this type of power armor.
The T-51b was developed in the laboratories of the West Tek Research Facility. At the end of the Anchorage Reclamation in January 2077, the armor had become the standard issue for soldiers in the Army's mechanized cavalry regiments.
Note: After the first lockpick attempt all nearby Brotherhood members turn hostile. Senior paladins and senior scribes do not come out of the storeroom, so the second attempt is impossible (when closing in on the door, the battle starts). The only possible way to lockpick the storeroom during combat is to use an electronic lock pick.
- The initiate is in the Old Town section of the Hub. He will be located in the building directly below the entry point. He can be freed by killing his guards.
- Will require a Repair check to complete the suit.
|Brotherhood of Steel bunker||Locker in the storeroom.|
|Mariposa Military Base||Locker in the armory, level 2.|
|Enclave Oil Rig||Locker in the barracks armory.|
|San Francisco||Store in San Francisco.|